Valve.



JOHN F. KYTLICA, OF CHICAGO, ILLINOIS.

VALVE.

Specification of Letters Patent.

Patented A110. 7, 1917.

Application led May 14, 1917. Serial No. 168,540

To all lLi/1,0m t may concern:

Be it known that I, Jol-IN F. KYTLICA, a. citizen of the United States, and a resident of Chicago, county of Cook, and State of llliiiois, have invented certain ne i Iand useful Improvements in Valves, of which the following is a` specification.

This invention relates to improvements in valves of the reciprocating type, and has particular relation to valves oi' said class or type, which are designed to be used in connection with internal combustion engines and located in the cylinder heads thereof, but may be used for other or general purposes` and it consists in certain peculiarities oi2 the construction, novel arrangement and operation of the various parts tliereoil as will be hereinafter more fully set 'forth and speciiically claimed.

The principal object of the invention is to provide a valve ot the reciprocating type, which shall be oi". an extremely inexpensive and simple construction, strong, durable, and eflieient in operation, with its parts so made. arranged and coperating with respect'to one aneth-er, as to prevent the usual wear on thc valve-carryiiig-stein, incident to the inclination thereof in its iecitn'ocations, and so that said valve-stein will be caused to travel in an absolutely true straight line, thus eii'ecting a perfect closure of the valve-head when seated. A further object of the invention is to provide means for operating' the valve-head and its stein iii such a manner that the parts of the mechanisin may be automatically lubricated, and so that the friction incident to the contacting portions oi' the operating parts will ile reduced to a minimum.

Other objects and advantages of the invention, will be disclosed in the subjoined description and explanation.

In the accompanying drawing, which serves to illustrate an embodiment of the invention,

Figure 1, is a ragmental vertical sectional view of the upper portion of an engine cylinder, showing the valve embodying my invention mounted thereon, andby continuous lines the positions the parts will oc-v. i when the valve is closed and by dotted y @wv-V lrnzs he positions said parts willoccupy whentlie valve is open.

Fip. 2 is a ragmental view fof the lower portion of the valve casing showing a modiiication in the construction of the valve head and the seat therefor, and f f Fig. 3 is an enlarged cross-sectional view taken on line Bf of4 Fig. 1, looking in the direction indicated bythe arrows.

Coiresponding` numerals of reference refer to like partswthroughout the different views of the drawing'.

The reference numeral 4 designates the upper portion or head of an engine cylinder or any other suitable support or part in connection with which the valve 'is eniployed, and in the present instance is shown as having inlet ports 5 which communicate with suitable openings G in the valve casing or cage 7 which is by preference circular in cross-section and is located in suitable openings 8 in the engine head or other suitable support 4 as is clearly shown in Figsjl and 2 of the drawings. The valve 'casing or cage 7 is provided centrally-with a tube 9 which extends lfrom a. point near the. lower part of the casing or cage 7 to any suitable distance above the top 'of said casing. Slidably located in the tube 9 is a hollow valve stem 10 which carries on its lower end a valve head 11 which is of sufiicieiit size to close a suitable opening or seat for the valve in the lower portion of said casing. The upper portion of the tubular or hollow valve stem 10 is provided with anl annular groove 11'a in which is iitted a lsplit ring yor bushing' 11b which is iirmly held in position by means of a collar 12 which has a shoulder 18 within its opening to rest against the lower portion of the ring or bushing 11a as will be clearly" seen and readily understood by reference to the drawings. Surrounding the tube 9 is a coiled spring'l/i one endof which rests against the collar v12`and the f other end thereof rests against the upper surface of the valve casing. The opening 8 in the upper portion ot' the engine head or support l may be provided. with internal screw-threads to engage externalv screwthreadson a nut or collar 15 which surrounds the lower portion of the spring 14 as shown. The valve stem 10 is provided with a-.number of openings 16 to permit a suitable lubricant, placed in the cavity of the valve'stem 10, to pass'outwardly so as to lubricate the surfaces of said stein and the tube 9 which surrounds the saine. In its lower end the valve stem is provided with a rounded depression or recess 17 to receive the correspondingly shaped lower end of an operating rod 18 for the stein and its valve. This operating rod is of suflicient length to extend some distance above the upper end of the valve stem 10 and has its upper end rounded as at 19`-to fit in a correspondin ly shaped recess 20 formedi'ii the lower sur ace of a rocker-arm 21 which is mounted on a bracket 22 extended upwardly from the engine head 4 or other suitable support. The opposite end of the rockerarm 21 is also provided with a rounded bearing 20 in its lower surface for the upper end of a rod 23 which may be reciprocated oroperated in the usual manner by means 'of the cam shaft, not shown, of the engine,

or any other suitable instrumentality.

The valve head l1 has onitsupper surface near its periphery an annular groove 24;

which is substantially V-sliaped in cross-section but terminates at its apex in a recess 25 which is for the purpose 0f receiving dust or dirt or other' foreign substances which might collect on the walls of the groove,l 24 and prevent the valve head 11 beirg rop'- erly seated on its seat 26 which is'circu ar in shape and has its loweisurface V-shaped in cross-section to correspond with the shape of y the groove 24: in the valve head. The oper-` ating rod 18 is of such a size' 4that in the operation of the valve said rod will not touch the valve stem 10 at any point` except at the bottom of said stem. f

In Fig. 42, ofthe drawing, I have'showna y modification in the construction of the valve head, its seat, and in the construction of the lower 'end of the operating rod 18 and in the bearing for the lgwer end, of said rod. In this modified forni the valve stein or tube, 10 is slidably loc ted in the tube 9 of the valve casing, as int e other construction, and has on its lower end a valve head l1 which has near its periphery an' upwardly extended annular'head or rib 27 which is inthe form of an inverted V in cross-section. This :an-

nular bead or rib fits in' aV correspondingly,

shaped annular ,groove 27 formed in they lower surface of the valvst' 0f the Casing and' saidgroovehas/at its apex anann'ular recess 28 employed'for the4 same purpose as the annularl groove or recess y25 in the vabove described construction. 'In` this modified construction the bott'oin 'ofthe tube 'or stein 10 is provided `witli'a;'conical shaped recess or depression L29 tofrecivethe correspondingly shaped lowerfend 3`Oof ther 'operatinnr rodlS fort-he valveaiid itsstem, whicliroc operatedin a similar manner to that shown inFig. 1 andabovedescribed.

. i From the foregoing and 'by reference to Ithe drawingg, itwill `be readily understood 85 and clearly seen thatias the rocker-arm is .-valve vseat,l a hollow valve-stem slidaly.'

is :otherwise of the Vsame construction and.

.itis of such size as to be incapable of contacting with. said stem at any other point, it is obvious that there will `be no friction between said arts except at their bearing points, yet tlie valve a'nd its stem will be caused to reciprocate in an yabsolutely straight line, it beinglunderstood that the spring 14 will cause theupward or closing movement' of the valve stem and valve head. While I have illustrated and described an4 embodiment of the invention in a Aform of 'construction for carryingit into effect; yet.

`this is ca able of variations' andv modifications), wit out departin from the spirit. of the invention. pI, there orc, do not wish to be limited to the precise details'o 'theeon struction as set forth andl disclose but-de-4 sire to avail myself of such variations, modifications, and modesof its use, as come within theJ`4 scope of the a pcnded claim-.

Havin thus fully escribed my invention, Y what I'c aim als new and desi'reto secure by Letters Patent is--f` f 1. A' valve consisting Aof a casing havi mounted in said easing, a valve head on said .stemxto close said seat an -o eratiiig rod freely locatcd'in the hollow lva ve-stem; and loosely engagingkthe same at its' inner end,l and means to reciprocate saidfrod, stemand valve.` f 5. 2 A valve consisting of a casing having a valve seat, a hollow valve-stein slidalily` mounted in said casing, a-valvehead onsaidno .stem to close said seat, an operatinglrod' located in the hollow valve-stem andfhaving one endin bearingucontact therewith but A, ,otherwise free from said stem, a'nd means to' reciprocate said lrod, stem'and'valve.

3. A valvcfconsistingfofa Casin-g having a valve seat, a hollow valve-stem slidably mounted iii said casing, a valve-head on said stem to close said seat; an operating' rod located in the hollow valve-stem andhaving one endreduced andcentered in bearing'con- -tact ltliererwith but otherwise free from said stemandlvalve. v

4. A valve consisting of a casingliavin a valve,A seat, 'a 'tubular member -exten ed stem, vand means to reciprocate said'rod,

through the c'asing'from a'point near said se tj,`a hollow valve-stem slidably ,mounted said tubular member, a .valve-head `on 'said stein tolclose Saiillseat,,anv operatinglo Laeie rod located in the hollow valve-stem, and

means to reciprocate said rod, ,stem and valve.

5. A valve consisting of a casing having a valve seat, a tubular member extended through the casing` from a peint near .aid seat, a hollow valve-stem slidably mounted in said tubular member, and having one or more openings in its walls, a valve-head on said stem to close said seat, an operatingrod located in the hollow valve-stem, and means to reciprocz te said rod, stem and valve.

G. A valve consisting of a casing having a valve seat, a tubular member extended through the casing from-a. point near said seat, a hollow valve-stem slidably mounted vin said tubular member, a val vehead onsaid stem to close said seat', a spring surrounding the tubular member and resting at one of its ends on the valve casing and having its other end connected to the valve-stem, an operating rod located in the hollow valve-stem and means to move said rod against the tension of said spring.

7 A valve consisting of a casing having a valve seat, a tubular member extended through thecasing from a point near said seat, a hollow valve stem slidably mounted in said tubular member and having one or more openings in its walls, a `walvehead' on said stem to close said seat, a collar on the opposite end of said stem, a spring interposed between lsaid collar and the casing around said tubular member, an operating rod located in the hollow valve-stem and lhaving one end reduced and centered in bearingcontact therewith butl otherwise free from said stem, and means to move the operating rod against the l'tension of. said sprinff.

8. A valve consisting ot a casing having a valve seat, a mike-...steen slidably mounted in said casing, a valve-head -on said stem to close said seat, said bead and seat having; a coacting annular groove and an annular projection 'to lit in said groove, said grooves and projection being,` angular in cross-sec tion and the groove having at its apex an annular recess.

JOHN F. KYTLICA.

` Witnesses:

Giras. C. TILLMAN, S. l?. PUZIGK. 

